C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
C21D9/0006—Details, accessories not peculiar to any of the following furnaces
C21D9/0018—Details, accessories not peculiar to any of the following furnaces for charging, discharging or manipulation of charge
Machine agricole destinée au paillage des cultures pourvue d'un dispositif de sectionnement de bandes de film et de recouvrement par la terre des extrémités des bandes déposées sur le sol